Your going to find a couple things out about these forums:
1. Critique can be harsh. Many post images, get thrown to the dogs, and never come back. In most forum members views, its no skin off our back, so come at it from that angle, don't take anything too seriously or you won't last long.
2. We like people posting, but theres more than enough images to go around. Try to limit your posts to 2-3 images at maxif your looking for critique.
3. Many users aren't fond of watermarks. The general consensus is that they should be small and unobtrusive, if present at all. Saying images were sourced from another website and thats why they still have a giant watermark won't fly for most members. They'd simply question why the watermarks are present at all.
Honestly, and this is me critiquing, but I don't see what your talking about. Your right, your images tend to have an odd type of content to them, but I see little evidencing a "line/symetry peeve." Many of the compositions seem standard, run of the mill from a symmetry standpoint. Nothing too abstract.
If I had to pick one I like the most, it would be number two. (Oh yeah, don't forget to number your images) Of the entire set it seems the most artistic IMO.
Welcome to the forum! Hope your stay is longer than most