include reddit, propeller and fark
create xml sitemap and submit in goole and submit your site in google, yahoo and msn
Yes that really works, SP is one of the most famous forums where you can get a lot of info, this site is being cached like every now and then, you even don’t have to do 100 posts over here just one link on a relevant page and you’ll get indexed in less than 24 hours.
Every Search Engines have different algorithm/ways to indexed a site. It’s better to know them first and find out the strategic way to indexed your site. As for every SE, valuable and quality backlinks are very very important.
Yip I would say the best way is a link from a website that gets crawled by Google quite often.
For me the fastest way to get index from google is spreading your link right away. What i mean submit it to social bookmarkings, directories, and exchange links.
webmaster tools - good xml sitemap is a great start.
same with googlecommunity and v7n 
setup a google webmaster account and you will see some hits or a good quantity of backlinks is getting to a quick google indexing.