First, let's separate the terms 
Google Adwords is what businesses use to drive traffic TO their websites.
Google Adsense is what website owners put on their pages to monetize their traffic with contextual ads.
For an ecommerce site that is selling t-shirts, I think ads of any kind are generally a bad idea. You can lose a potential sale for a click worth pennies.
It also makes it seem like you aren't serious about selling t-shirts (in my opinion). It's like you aren't completely confident in your products, so you are wiling to send your customers elswhere.
I think in general, Google Adsense is a great way to monetize content based sites.
Google Adwords is a great way to advertisin your site and get targeted traffic to your t-shirt store.
Google Adwords is what businesses use to drive traffic TO their websites.
Google Adsense is what website owners put on their pages to monetize their traffic with contextual ads.
For an ecommerce site that is selling t-shirts, I think ads of any kind are generally a bad idea. You can lose a potential sale for a click worth pennies.
It also makes it seem like you aren't serious about selling t-shirts (in my opinion). It's like you aren't completely confident in your products, so you are wiling to send your customers elswhere.
I think in general, Google Adsense is a great way to monetize content based sites.
Google Adwords is a great way to advertisin your site and get targeted traffic to your t-shirt store.