VPN can they tell it's a paid proxy?

im thinking about using Hidemyass VPN my question is .. can anyone tell (AF manager) that i am using paid proxies ?? or would it appear to them as just a normal IP address ??

that would be one sure way to get Ban...some review site stated HMA VPN is not encrypted one and it is detected as "Network sharing Device"...maybe false information but I will urge to make sure and contact HMA for confirmation.I am sure HMA VPN is quite famous one and many people may be using it for that stuff.
I have tested vpn4all and there server is encrypted one..checked on whatismyip and whoer and it is not revealing itself as proxy...they have around 22 server ( I got that much)but one of their support team has told me they have around 1000 IP's before I placed order but to my surprise I am getting same IP each time I connect to that particular server...support says it gets change after I reconnect but its not happening...so if you looking for great numbers of IPs these VPN is not for you as it has low number of fixed IP.
I know how you can hide yourself under proxies for that you need socks5 SSL or VPN 256 bit or greater and some trick which I won't place here..I am not full aware of BHW and don't wanna break it unknowingly.

HMA sucks balls. I mailed on there and got shut down the next day, and they wouldnt refund me. stay away from crappy HMA

hidemyass has one of the lowest IP qualities on the net. Abused uncountable times.

Yes, you should expect that companies can detect you are behind a proxy when you use a low quality solution.
Of course not every website/company cares or tests if you are behind a proxy and it can not be detected without external help (blacklist database)