@AppleJane You're welcome.
Personally I've found them alright.
Everyone is different though as some of it depends on your criteria and what you can and can't do.
If you sign up you'll see what fits for you. Sometimes though if you apply for something you may or may not get it, again, may be area specific etc.
Some need qualifications/ experience etc. Some don't.
A lot on here are enjoying the buying task but I haven't done it.
A few people on here, now & in the past get/ have had regular projects.
You'll know what's what when you've been signed up for a bit and how it works.