Search Engines

(Not sure if this is the right place to ask, but I’m sure the mods will sort it out:))

Recently a client asked me about search engine use for flash sites. I told him that we can add all of his keywords into the index file and it can be found by search engines… but I have a suspicion that there is more that can be done. Is there?

More Q’s:
Do you guys have any tips or tricks with search engines for flash websites? Or links etc. What’s you personal experience with it? When it comes down to it, are html websites better for it?