No, not unless it's click bait, strictly for drawing traffic to an outside site. However, most (including myself) are hesitant to click on any unknown link because of security concerns. If you're seeking comments on your images just posting a thumbnail, and expecting the viewer to click on it to enlarge it, you likely won't get many comments either. Scrolling through posts most won't go to the trouble. Sizing your images for 1000-1200 px on the long side is a good size for viewing. If you post an image and also post a link to your sharing site for further viewing it's okay, so long as you're not trying to sell something.
I have no experience with your sharing site, I use Flickr which gives me a BB code that I can copy and paste in my post. Like this recent one posted here in TPF
Cold Water clicking on the image automatically takes the viewer to the full resolution image on Flickr.