How do you find some ones e-mail address or blog......?

There's probably hundreds of e-mail address and blog hosts. It's not going to be easy to find one e-mail address without knowing at least the host used (i.e. for e-mail - Yahoo, Hotmail, Gmail, Excite, and etc.; for blogs - Y!360, MySpace, Blogger, Livejournal, Wordpress, Facebook and etc.). Also, not everyone in the world has an e-mail or a blog. Although it is likely both have an e-mail address. Lastly, there's no guarantee they are listed in a directory, since for many, the user can choose be unsearchable or not listed.

So, to start your search, you'll need as much information regarding your sister and niece as possible.

Then, you can start with Yahoo in terms of searching for free. There is a very good chance that either have a Yahoo e-mail address, since it's one of the top e-mail services.

- Search the Yahoo Member Directory at http://members.yahoo.com/ . Click on the "Advanced Search" link to help narrow down results. Again, they can certainly choose not be listed. Note, some people have been able to make their members profile look like a 360 space.

- Search Yahoo! 360 spaces (a Yahoo social networking service that features a blog): http://360.yahoo.com/search.html . You can search for people via nickname, keywords, and location. You can search by real name only if the person has enabled that option. See http://help.yahoo.com/l/us/yahoo/360/search/index.... for more about using that search.

You may have to do a similar individual searches at each of the other e-mail and blog providers that I've mentioned above, but you might be able to find something via "people search engines" that scan much of the web. However, it's likely that to get more details about a result, you might have to pay a fee.

Check out:

Spock: http://www.spock.com/

Yahoo! People Search: http://people.yahoo.com/

Whitepages: http://www.whitepages.com/

Pipl: http://www.pipl.com/

PeekYou: http://www.peekyou.com/

Wink: http://wink.com/

IAF: http://www.iaf.net/

Good luck!