Is it too convenient to mark anything we don’t like as Spam?

I will admit I've done it, I get a newsletter I don't want to read and either its not easy to unsubscribe or it requires too much downward scrolling so I've just hit the 'Report Spam' button in Gmail. I know its bad tricking the spam filter into thinking something I most likely accidentally signed up for is spam but its just too convenient.

(Is reporting spam too convenient?)

Everyone hates spam, and I love the fact Gmail does a good job in filtering out the junk but it seems everyone sends newsletters now. I booked a holiday online with some obscure company last year, now I get weekly emails from them asking where I want to go next? I once booked a dance event tickets through Ticketmaster, now I get emails asking if I want to see Bon Jovi - not even targeted advertising.

It goes on and on and on, some make it easy to unsubscribe others not so easy. The most recent culprit to Gmail spam has been Facebook, I get daily emails asking if I want to be super poked or if I want to turn my friends into Vampires by biting them. It all gets too much, Facebook does provide a link to find out about not getting these emails but it simply goes to the application overview - hardly useful.

Here are some examples:

1&1 want me to visit their site, find my log in details, navigate to Newsletter Settings then unsubscribe - is this too much to ask when Report Spam is just one click?

When trying to unsubscribe from Nectar emails, they want my email address and account number - shame I cant memorise my account number.

Trade Doubler write their emails in such a small font that its impossible to read the unsubscribe part (I believe it says something about logging in and going to settings - account information - mailing options.)

Not everyone gets it wrong:

Ebay give you multiple ways to unsubscribe.

To unsubscribe from box.net you just click the link which sends you to a page saying you have been unsubscribed - easy.

Has anyone else been tempted just to click report spam instead of actually unsubscribing to a newsletter?