If you are actually serious about selling them, and want to generate some interest, I would advise posting a bit more information.

Such as:
- Are they monthly clients, or yearly clients?
- What are the prices they're paying?
- How much space/bandwidth is allocated to them?
- How much space/bandwidth do they actually use?
- Minimum you'll accept?
- Buyout price?

And those are just a few. Not very many people want to PM when they know nothing at all about your clients.