OK heres a true story staring me.
I was developing a site, it wasn't finished, and wasn't getting any clients. It was however on-line. I eventually finished the site, moved it to its proper domain and set about promoting, however, when the test site was live it was crawled by Google.
About three months later I got a letter asking me to attend an appointment at the Inland revenue (Now HR Revenue and Customs) when I arrived they asked be about any business interests I had, and I was honest. They then placed a piece of paper on the desk in front of me with a print out of the test site homepage. Again I was asked to explain, and I did, but they weren't exactly believing me. I left the meeting slightly shell shocked then things got worse when I received a tax bill for close on 3 grand estimated revenue from this test site.
The moral is that HR revenue and customs see anything that has the slightest change of generating revenue as a business. therefore if you place something on the web its almost like opening your shop door. You need to disclose your income, even if it is zero.
I was able to eventually prove my case and I was refunded the tax bill plus interest but it took close on 6 months,
It made me wonder how did they find out. I suggest they simple pick an industry and carry out a search then extract the whois details for everyone who runs a site that is operating within that industry. Is his person registered as a business? do they declare their income if not lets invite them along for a chat.
how they will find out?
Asking incriminating questions on the Internet might give them some clues.
Just remember, tax doesn't have to be taxing!
Mack.
[edited by: mack at 7:10 pm (utc) on Apr 3, 2010]