directwheels - 6:32 pm on May 15, 2010 (gmt 0)
links to your new domain is definitely a good way to get Google to start indexing your site quickly.
i have been doing the same thing since probably August of 2009. it seems to index my new domains quickly everytime. as to ranking, i am not too sure since i don't rely on it to rank my new sites.
i have a couple of twitter accounts i use solely for this purpose. those accounts have no followers and it doesn't seem to matter.