Hey. Couldn't find a forum that's specific to sensor cleaning, so, sorry if there is one. Can anyone attest to the purported effectiveness of this "Sensor Gel Stick"? I myself have no doubt that this gizmo is quite capable at picking up most of the debris. However, my main concern is its inherent "stickiness". I'm quite skeptical that upon contact, the sticky material does not leave any residue, especially around the edges (of the gel). I've had a few mixed-to-bad experiences with sensor swabs (on crop sensors), as the procedure would always leave some residue and possibly minor scuffing close to and parallel to the horizontal edges. I could observe those defects only in test photos, after applying a strong boost of contrast but the pictures spoke for themselves. The Internet is filled with testimonies and sample photos from all kinds of happy-go-lucky types, who vouch for the Sensor Gel Stick. But do those people even know how to properly analyze their sensors? Basically, all I've seen was before and after photos of the sky... at the normal contrast.... That doesn't tell me much. There are also plenty of horror stories. But I believe that those stem largely from product incompatibility or the fact that the market is flooded with cheap rip-offs of this "gel stick". Honestly, before shelling out close to 60 bucks on a plastic stick and possibly putting my OLPF at risk, I would really need a few honest opinions from people who have used this "cleaning product" on their Nikon cameras. I'm interested in hearing the testimonies of genuine pixel-peepers, such as myself. My main concerns with this product are the possibility of abrasion and residue being left on the OLPF. Thanks in advance!