SES london 2005

If you have not registered, hurry up:
http://www.jupiterevents.com/sew/london05/registration.html

On this topic, just a quick summary of what services you can expect from a SEM company:
- Directory Submission
- Paid Inclusion Service
- Paid Listing Management
- Link Building Services
- "Search-friendly" Design
- Host optimized pages
- Cloaking services

That's it - just make sure that you know about the different services, and make your choice - last two tactics are often considered as "black hat techniques".

You may want to avoid them at the beginning - until you understand fully the risk you are taking by using them.