1) Want to know what Facebook users have joined because of you? Go here.

2) Would you like to see a list of everyone that you have invited to join Facebook but who haven’t accepted your invitation yet? Go here.

3) If you’re interested to know who in your circle of friends has brought the highest number of people to Facebook so far, you can go to facebook.com/impact.

With the Facebook Invites history page you can send email reminders to people who have yet to join the website just in case your previously sent invites somehow went unnoticed or if they happened to land in their junk folder.

This is definitely a useful tool as part of your social media marketing campaign if you’re a business sending out invites to existing/potential clients.

To do this, you go into your Twitter account settings, type in the username you’d like to change your account to and if it’s not taken, you hit the save button.

What happens when you change your Twitter username?

Twitter does a good job when it comes to the username transition. Changing your ID won’t affect your follower count, you’ll continue to be on Twitter lists, your old tweets and direct messages will remain intact and everything will continue to work just as it did before.

What’s the problem then?

Let’s say that your original Twitter ID was @seoking and you decided to change it to @seoqueen. Twitter automatically shifts your followers and friends to your new ID (@seoqueen) however search engines will have indexed your old ID (@seoking) for quite awhile.

So what does this mean?

If people are searching for your Twitter account on Google, there’s a chance they’ll come across your old profile page that no longer exists, returning a 404 error since you’ve changed your alias. Bad if you’re a business and your customers are looking to connect. So, in order to redirect your customers, potential friends, whoever, when you change your Twitter ID it’s a good idea to reserve the old one before anyone else has a chance to claim it.

Changing Twitter Handles the Right Way

Step 1: Go to your Twitter account settings and change the username from seoking to seoqueen.

Step 2: Log out of Twitter and create another account immediately (you can use the same email).

Step 3: Use seoking as the handle for your new Twitter account and set your profile URL to twitter.com/seoking. In your profile description, you can say something like – “this account has moved, please follow @seoqueen.” You can even post a tweet with your new account saying the same message.

Now if people happen to find your old Twitter page via search engines or links on other web sites, they’ll still be able to find and follow you on your new profile.

For those of you who have multiple Twitter accounts, you’ve probably noticed that you’re unable to use the same email address with other accounts. If you try it, Twitter will shoot out the “Email has already been taken” error. A pain, I know.

But don’t fret, there’s an easy solution! If you’re using a Gmail or Google Apps email address then you’re in luck!

With Gmail you can add a dot (.) anywhere in the username end of the email and all emails sent to the dotted email will still end up in your Gmail inbox. For example, if I had brett@gmail.com, any email sent to br.ett@gmail.com or br.e.tt@gmail.com would still find its way to my inbox, as Gmail ignores periods in the username.

I think you know where I’m going with this, but I’ll continue on to be thorough.

Twitter considers brett@gmail.com and br.ett@gmail.com to be two separate email addresses even though they both direct email to the same Gmail inbox.

If you don’t want to use this method (for whatever reason), a second email is created automatically when you register for a Gmail account, one that uses the googlemail.com domain.

So if you have two accounts on Twitter, you can use the Gmail email with one and the googlemail email with another.

Have fun!