I recommend...

Advertising is an interesting theme even if you are not studying it and just want to spend some time finding out new interesting information. Many sources might be really useful in this purpose. If you do really pay attention on slogans in advertising you should visit http://www.thinkslogans.com/slogans/advertising-slogans/ and discover more for yourself. From my point of view, sometimes it is a hard work to create successful and memorable slogans. It also was really to notice that I am really fond of an old retro vintage advertising. Mostly I like it because of a real artistic work in this kind of advertising. I do not really like nowadays computer technology used for creating posters which does not really involve art. So I would like to recommend you an http://www.vintageadbrowser.com which helps you in finding any vintage ads easily. The third web page which is really interesting for me for finding new ad information is http://www.ibelieveinadv.com/. This is a blog where you can find advertising and commercials in English daily. Those are my 3 favorite pages which I do really enjoy, but if you need more information just use amazing Google engine and find tons on information of any kind.

References:

April 30, 2012 URL <http://www.thinkslogans.com/slogans/advertising-slogans/>
April 30, 2012 URL <http://www.vintageadbrowser.com>
April 30, 2012 URL <http://www.ibelieveinadv.com/>